Repp, Jascha and Steurer, Wolfram and Scivetti, Ivan and Persson, Mats and Gross, Leo and Meyer, Gerhard (2016) Charge-State-Dependent Diffusion of Individual Gold Adatoms on Ionic Thin NaCl Films. PHYSICAL REVIEW LETTERS, 117 (14): 146102. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
It is known that individual metal atoms on insulating ionic films can occur in several different (meta) stable charge states, which can be reversibly switched in a controlled fashion. Here we show that the diffusion of gold adatoms on NaCl thin films depends critically on their charge state. Surprisingly, the anionic species has a lower diffusion barrier than the neutral one. Furthermore, for the former we observe that the diffusion atop a bilayer of NaCl is strongly influenced by the interface between NaCl and the underlying copper substrate. This effect disappears for a trilayer of NaCl. These observations open the prospect of controlling the diffusion properties of individual metal atoms on thin insulating films.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AUGMENTED-WAVE METHOD; SURFACE-DIFFUSION; LONG JUMPS; FORCE MICROSCOPY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Jascha Repp |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Mar 2019 13:03 |
| Last Modified: | 28 Mar 2019 13:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3269 |
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